Triple

T1434819
Position Surface form Disambiguated ID Type / Status
Subject London Liverpool Street E30536 entity
Predicate servedBy P82 FINISHED
Object London Underground Central line
The London Underground Central line is a major east–west Tube line running across Greater London, connecting key central and suburban areas as part of the city’s rapid transit network.
E164986 NE FINISHED

How this triple was built (4 steps)

Every LLM step that produced this triple, in pipeline order — named-entity classification, the disambiguation choices (the exact options shown, with the pick highlighted), and the generated description. The batch + timestamp of each is in the Provenance table below.

NER Named-entity recognition gpt-5-mini
Instruction
Given a phrase, classify it is english named entity (e.g., persons, organizations, works of art) in Latin script, or not (e.g., literals, dates, URLs, verbose phrases). For disambiguation, the statement where the phrase occurs as object is also given. Please return a JSON object with `phrase` (string, the phrase being analyzed) and `is_ne` (boolean, indicating whether the phrase is a Named Entity).
Input
Phrase: London Underground Central line | Statement: [London Liverpool Street, servedBy, London Underground Central line]
NED1 Entity disambiguation (via context triple) gpt-5-mini-2025-08-07
Target entity: London Underground Central line
Context triple: [London Liverpool Street, servedBy, London Underground Central line]
  • A. Piccadilly line
    The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
  • B. Northern line
    The Northern line is a major London Underground route running north–south across the city, serving key central and suburban areas.
  • C. Bakerloo line
    The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
  • D. Jubilee line
    The Jubilee line is a major London Underground line running across the city from northwest to east, serving key financial and commercial hubs including Canary Wharf.
  • E. London Underground
    The London Underground is a rapid transit system serving Greater London and surrounding areas, famous as one of the world's oldest and most extensive metro networks.
  • F. None of above. chosen
  • G. Unsure - the case is ambiguous/there is not enough information to decide.
NEDg Description generation gpt-5.1
Instruction
Generate a one-sentence description of the target entity. 
You are given a context triple in the form (subject, predicate, object), where the object is the target entity. 
# Instructions
Use the triple to infer relevant information about the entity. Describe the entity based on what is most defining, well-known. 
Avoid repeating the information from the triple, unless really essential.
# Response Format
Return only the sentence: "Description: [one-sentence description of the target entity]"
Input
Entity: London Underground Central line
Triple: [London Liverpool Street, servedBy, London Underground Central line]
Generated description
The London Underground Central line is a major east–west Tube line running across Greater London, connecting key central and suburban areas as part of the city’s rapid transit network.
NED2 Entity disambiguation (via description) gpt-5-mini-2025-08-07
Target entity: London Underground Central line
Target entity description: The London Underground Central line is a major east–west Tube line running across Greater London, connecting key central and suburban areas as part of the city’s rapid transit network.
  • A. Piccadilly line
    The Piccadilly line is a major deep-level London Underground route running from the north and west suburbs through central London, serving key destinations including Heathrow Airport.
  • B. Northern line
    The Northern line is a major London Underground route running north–south across the city, serving key central and suburban areas.
  • C. Bakerloo line
    The Bakerloo line is a deep-level London Underground railway line running between Harrow & Wealdstone in northwest London and Elephant & Castle in south London, known for serving key central locations such as Baker Street, Oxford Circus, and Waterloo.
  • D. Jubilee line
    The Jubilee line is a major London Underground line running across the city from northwest to east, serving key financial and commercial hubs including Canary Wharf.
  • E. London Underground
    The London Underground is a rapid transit system serving Greater London and surrounding areas, famous as one of the world's oldest and most extensive metro networks.
  • F. None of above. chosen

Provenance (5 batches)

The batch behind each pipeline step, in order, with when it ran. Timestamps are batch-level — stages were processed in waves, so the object chain (NER → NED1 → NEDg → NED2) reads in order, but predicate / elicitation batches can sit in a different wave.

Step Stage Batch ID Status When
creating Elicitation batch_69a498fc69ec8190b61722bd4b67c4d2 completed March 1, 2026, 7:52 p.m.
NER Named-entity recognition batch_69a4c500a9888190a16fbb1ec97a79c9 completed March 1, 2026, 11 p.m.
NED1 Entity disambiguation (via context triple) batch_69ad08b5ba94819092e66e8dfd6bf87d completed March 8, 2026, 5:27 a.m.
NEDg Description generation batch_69ad09f7609481908ce2f77da55461be completed March 8, 2026, 5:32 a.m.
NED2 Entity disambiguation (via description) batch_69ad0a4a1f80819099bfef26ad0ab428 completed March 8, 2026, 5:34 a.m.
Created at: March 1, 2026, 8 p.m.